Cerwin Vega TS42 21 Inch Folded Horn Bass Subwoofer System - Stroker Technology Explained - View larger The TS-42 is the loudest, deepest and most powerful folded horn ever created by Cerwin-Vega! Its magnificent design and outstanding features makes it ideal for use in the most challenging scenarios where vigorous bass is needed such as live sound, installations, large venues and club applications. Featuring a gigantic 21 inch woofer with advanced Stroker technology and delivering 144 dB of maximum SPL (better than two 18” folded horn speakers); the TS-42 raises the low frequency performance bar to the next level. The TS-42 Folded Horn delivers more bass per square inch than other subwoofer designs and includes a curved horn mouth bracing for smoother frequency response, a stunning cast aluminum C-Series door that acts as a functional heat sink and extra deep pole cups for increased stability with full-range speakers. The TS-42 is a big and sturdy speaker, but thanks to its integrated wheels and extra handles you are able to easily move and transport it. Features & Specifications Newly designed 21 inch woofer with Stroker technology Improved power handling to 2000 watts Radial cooling fins outside the aluminum Stroker pole increase cooling and improve efficiency Stroker technology eliminates cone rocking and allows increased excursion Six magnet sections and the tunnels located between them provide cooling below the top plate Rugged new die cast door provides improved heat dissipation New curved horn mouth bracing for smoother frequency response Steel front corner bracing to improve cabinet strength Extra handles, ergonomic balanced design, and larger casters for easy handling Frequency Response: -3db 35 Hz - 215 Hz / -10db 33 Hz - 230 Hz Power Capacity: 1000W RMS / 2000W Peak Recommended Power: 1500 w - 2000 w @ 8 ohms Input Connectors: (2) Neutrik Speakon Nominal Impedance: 8 ohms Maximum SPL: 144 dB